/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 08:49:58,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 08:49:58,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 08:49:58,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 08:49:58,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 08:49:58,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 08:49:58,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 08:49:58,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 08:49:58,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 08:49:58,523 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 08:49:58,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 08:49:58,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 08:49:58,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 08:49:58,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 08:49:58,525 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 08:49:58,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 08:49:58,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 08:49:58,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 08:49:58,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 08:49:58,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 08:49:58,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 08:49:58,528 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 08:49:58,528 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 08:49:58,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 08:49:58,528 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 08:49:58,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 08:49:58,529 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 08:49:58,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 08:49:58,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 08:49:58,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 08:49:58,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 08:49:58,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 08:49:58,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 08:49:58,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 08:49:58,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 08:49:58,530 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 08:49:58,531 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 08:49:58,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 08:49:58,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 08:49:58,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 08:49:58,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 08:49:58,532 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 08:49:58,532 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-01 08:49:58,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 08:49:58,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 08:49:58,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 08:49:58,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 08:49:58,869 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 08:49:58,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d32_e0.c [2024-11-01 08:50:00,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 08:50:00,603 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 08:50:00,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d32_e0.c [2024-11-01 08:50:00,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/855834513/0debbbc73f6f4ec9b1c6621dbbb3fc62/FLAG156af204e [2024-11-01 08:50:00,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/855834513/0debbbc73f6f4ec9b1c6621dbbb3fc62 [2024-11-01 08:50:00,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 08:50:00,844 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 08:50:00,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 08:50:00,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 08:50:00,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 08:50:00,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:50:00" (1/1) ... [2024-11-01 08:50:00,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8e324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:00, skipping insertion in model container [2024-11-01 08:50:00,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:50:00" (1/1) ... [2024-11-01 08:50:00,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 08:50:01,066 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d32_e0.c[1280,1293] [2024-11-01 08:50:01,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 08:50:01,323 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 08:50:01,332 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d32_e0.c[1280,1293] [2024-11-01 08:50:01,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 08:50:01,431 INFO L204 MainTranslator]: Completed translation [2024-11-01 08:50:01,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01 WrapperNode [2024-11-01 08:50:01,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 08:50:01,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 08:50:01,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 08:50:01,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 08:50:01,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,561 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1459 [2024-11-01 08:50:01,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 08:50:01,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 08:50:01,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 08:50:01,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 08:50:01,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,618 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-01 08:50:01,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 08:50:01,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 08:50:01,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 08:50:01,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 08:50:01,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (1/1) ... [2024-11-01 08:50:01,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 08:50:01,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 08:50:01,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 08:50:01,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 08:50:01,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 08:50:01,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 08:50:01,776 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 08:50:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 08:50:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 08:50:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 08:50:02,009 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 08:50:02,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 08:50:02,998 INFO L? ?]: Removed 416 outVars from TransFormulas that were not future-live. [2024-11-01 08:50:02,998 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 08:50:03,007 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 08:50:03,008 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 08:50:03,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:50:03 BoogieIcfgContainer [2024-11-01 08:50:03,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 08:50:03,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 08:50:03,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 08:50:03,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 08:50:03,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:50:00" (1/3) ... [2024-11-01 08:50:03,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187e7b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:50:03, skipping insertion in model container [2024-11-01 08:50:03,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:50:01" (2/3) ... [2024-11-01 08:50:03,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187e7b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:50:03, skipping insertion in model container [2024-11-01 08:50:03,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:50:03" (3/3) ... [2024-11-01 08:50:03,014 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w64_d32_e0.c [2024-11-01 08:50:03,026 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 08:50:03,026 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 08:50:03,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 08:50:03,080 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6421f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 08:50:03,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 08:50:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 08:50:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 08:50:03,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:50:03,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 08:50:03,093 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:50:03,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:50:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-01 08:50:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:50:03,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678942705] [2024-11-01 08:50:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:50:03,107 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:03,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:50:03,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:50:03,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-01 08:50:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:50:03,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 08:50:03,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:50:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 08:50:03,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:50:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 08:50:03,735 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:50:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678942705] [2024-11-01 08:50:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [678942705] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 08:50:03,736 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 08:50:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 08:50:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843783951] [2024-11-01 08:50:03,738 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 08:50:03,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 08:50:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:50:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 08:50:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 08:50:03,762 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-01 08:50:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:50:03,776 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-01 08:50:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 08:50:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-11-01 08:50:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:50:03,782 INFO L225 Difference]: With dead ends: 35 [2024-11-01 08:50:03,782 INFO L226 Difference]: Without dead ends: 17 [2024-11-01 08:50:03,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 08:50:03,788 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 08:50:03,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 08:50:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-01 08:50:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-01 08:50:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 08:50:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-01 08:50:03,835 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-01 08:50:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:50:03,835 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-01 08:50:03,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-01 08:50:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-01 08:50:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 08:50:03,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:50:03,837 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 08:50:03,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-01 08:50:04,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:04,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:50:04,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:50:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-01 08:50:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:50:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336083356] [2024-11-01 08:50:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:50:04,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:04,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:50:04,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:50:04,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-01 08:50:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:50:04,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-01 08:50:04,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:50:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 08:50:04,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:50:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 08:50:05,083 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:50:05,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336083356] [2024-11-01 08:50:05,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1336083356] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 08:50:05,084 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 08:50:05,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 08:50:05,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023412817] [2024-11-01 08:50:05,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 08:50:05,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 08:50:05,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:50:05,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 08:50:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 08:50:05,086 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-01 08:50:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:50:05,396 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-01 08:50:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 08:50:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 23 [2024-11-01 08:50:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:50:05,399 INFO L225 Difference]: With dead ends: 27 [2024-11-01 08:50:05,399 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 08:50:05,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 08:50:05,401 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-01 08:50:05,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-01 08:50:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 08:50:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 08:50:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-01 08:50:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-01 08:50:05,411 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-01 08:50:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:50:05,412 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-01 08:50:05,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-01 08:50:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-01 08:50:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-01 08:50:05,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:50:05,414 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 08:50:05,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-01 08:50:05,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:05,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:50:05,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:50:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-01 08:50:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:50:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240972810] [2024-11-01 08:50:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:50:05,620 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:50:05,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:50:05,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-01 08:50:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:50:06,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-01 08:50:06,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:50:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 08:50:07,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:50:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 08:50:09,623 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:50:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240972810] [2024-11-01 08:50:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1240972810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 08:50:09,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 08:50:09,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-01 08:50:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646179754] [2024-11-01 08:50:09,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 08:50:09,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-01 08:50:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:50:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-01 08:50:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-01 08:50:09,625 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 08:50:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:50:10,284 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-01 08:50:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 08:50:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-01 08:50:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:50:10,285 INFO L225 Difference]: With dead ends: 36 [2024-11-01 08:50:10,285 INFO L226 Difference]: Without dead ends: 34 [2024-11-01 08:50:10,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-01 08:50:10,286 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-01 08:50:10,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 65 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-01 08:50:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-01 08:50:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-01 08:50:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-01 08:50:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-01 08:50:10,292 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-01 08:50:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:50:10,292 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-01 08:50:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 08:50:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-01 08:50:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-01 08:50:10,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:50:10,294 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 08:50:10,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-01 08:50:10,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:10,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:50:10,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:50:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-01 08:50:10,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:50:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699252108] [2024-11-01 08:50:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:50:10,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:50:10,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:50:10,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:50:10,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-01 08:50:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:50:12,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-01 08:50:12,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:50:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-01 08:50:15,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:50:21,582 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse4 (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_232_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_232_arg_1~0#1_17|)))))))))))))) (.cse5 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_213~0#1|))) (let ((.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_190~0#1|)) (.cse9 (not .cse5)) (.cse10 (or .cse4 .cse5))) (let ((.cse3 (and (or (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_196_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_207_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_17|) .cse8))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_196_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_207_arg_1~0#1_17|))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|)))))))) .cse9) .cse10))) (let ((.cse2 (let ((.cse7 (= (bvand |c_ULTIMATE.start_main_~mask_SORT_3~0#1| |c_ULTIMATE.start_main_~state_177~0#1|) |c_ULTIMATE.start_main_~state_209~0#1|))) (and (or .cse7 .cse3) (or (and (or (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_196_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_207_arg_1~0#1_17| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_17|) .cse8))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_196_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_207_arg_1~0#1_17|)))))))))))))))))))) (_ bv0 8))) .cse9) .cse10) (not .cse7))))) (.cse1 (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_13~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_12~0#1|))))))))) (and (or (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 (_ bv255 32)))) (not .cse1) .cse2) (or (let ((.cse6 (= ((_ extract 7 0) (bvand .cse0 (_ bv254 32))) (_ bv0 8)))) (and (or (and (or (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 64))) (= (bvand |c_ULTIMATE.start_main_~mask_SORT_3~0#1| |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16|) |c_ULTIMATE.start_main_~state_209~0#1|)) .cse3) (or .cse4 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 64))) (not (= (bvand |c_ULTIMATE.start_main_~mask_SORT_3~0#1| |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16|) |c_ULTIMATE.start_main_~state_209~0#1|))) .cse5)) (not .cse6)) (or .cse6 .cse2))) .cse1))))))) is different from false [2024-11-01 08:51:15,699 WARN L286 SmtUtils]: Spent 27.23s on a formula simplification. DAG size of input: 527 DAG size of output: 521 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)